Treadmill safety key replacement part - Easy to use: Clips securely to any part of your clothing so you can exercise without worrying about losing the key. Simple to operate during walking or running. - All purpose design: Widely compatible. Fits on nearly 99% of treadmills and is compatible with most top brands. Adaptable to a wide range of treadmill models. - Quality materials: Made from high quality ABS plastic, braided cord, strong magnets and springs for added strength and safety. - Stable performance: Magnetic design provides reliable operation. Replacement of the treadmill key is quick and easy on most treadmills that require a round safety key. - Use scenarios: - Home workouts: clip to shirt or waistband to avoid key loss during runs. - Gym or class environments: use as a backup key to prevent workout interruptions. - Travel between facilities: keep attached to clothing to prevent loss and ensure fast setup.